I was able to fix this by adding it to 'Forced Builtins', but was wondering why this was necessary, seeing as the module in question is in the standard llibrary?
Fedora 15, Eclipse 3.6.2, Python 2.7.1, Pydev 2.2.1.2011071313
Seems to be still an issue on Pydev 2.7.1, Eclipse 4.2.1, Linux RHEL 6
Seems to be still an issue on Pydev 2.7.1, Eclipse 4.2.1, Linux RHEL 6